Misleading the Colorado potato beetle with an odor blend |
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Authors: | D Thiery J H Visser |
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Affiliation: | (1) Department of Entomology, Agricultural University, P.O. Box 8031, 6700 EH Wageningen, The Netherlands;(2) Present address: Laboratoire INRA-CNRS de Neurobiologie sensorielle de l'Insecte, F-91440 Bures sur Yvette, France |
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Abstract: | Walking tracks of Colorado potato beetles,Leptinotarsa decemlineata Say, were recorded on a locomotion-compensator in response to wind, odors of host plantsSolanum tuberosum L. and nonhost plantsLycopersicon hirsutum f.glabratum C.H. Mull, and to mixtures of these plant species. Host-plant odor induced positive anemotactic responses in starved females, whereas odor of the nonhostL. hirsutum was neither repellent nor attractive. The attractiveness of host-plant odor, however, was neutralized in the odor blend of plant species. Masking the attractive host-plant odor will hinder the beetle's searching for host-plant patches, and this principle may be exploited in pest control by mixed cropping.The locomotion-compensator was constructed with financial support from the Foundation for Fundamental Biological Research (BION), which is subsidized by the Netherlands Organization for the Advancement of Pure Research (ZWO), grant 14-02-02. The first author was supported by a grant from the French Ministry of Industry and Research. |
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Keywords: | Colorado potato beetle Leptinotarsa decemlineata Coleoptera Chrysomelidae Solanum tuberosum Lycopersicon hirsutum f glabratum chemoattraction masking mixed cropping olfactory orientation searching behavior |
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